Introducing Lagom, an open source Microservices Framework designed to offer traditional Java enterprises a low-risk, opinionated approach to accelerate the transition to a Microservice architecture. Built using real-world experience and proven Reactive Platform technologies—Play web framework, Akka message-driven runtime, and ConductR deployment orchestrator—this opinionated solution abstracts away the complexities of decomposing legacy monolithic applications into distributed Microservice architectures: Simple start up from a familiar environment—In Lagom, a single command launches all Microservices. Developers remain productive with an iterative, hot-code update experience all from within their existing development environment, from IDEs to Continuous Integration servers. Out-of-the-box legacy connectors—Lagom provides everything users need to breathe new life into legacy monolithic systems with ready-to-use connectors. Lagom supports distributed Microservice architectures by enabling data persistence via event-sourcing and CQRS–without the need to research new paradigms. Ready to deploy into production—Unlike other frameworks, Lagom is fully asynchronous, non-blocking, and back-pressure enabled, requiring no additional infrastructure or technologies. This frees up teams from complicating their deployments by having to deal with additional technologies when it comes time to go into production. Aimed at developers and architects, this first of two introductory webinars on Lagom displays how to make the transition to Monolith to Microservices painless, simple and even fun.

1. Markus Jura
@markusjura
From Monolith to Microservices made simple

2. Overview

3. Mircoservices Framework on the JVM

4. • Asynchronous I/O
• Asynchronous communication as first class
• WebSocket support
• Reactive Streams support
• Distributed by default
• Built-on Akka Clustering, Sharding, Persistence
Reactive

5. • Akka Persistence
• Cassandra support
• CQRS and event sourcing
Persistence

6. • Run all microservices at once
• Embedded Cassandra DB
• Intra-service communication via service locator
• Hot reloading
Development tooling

7. • ConductR
• Akka Cluster support
• Service locator
• Consolidated logging
• Restart services automatically
• Handling network failures
• Rolling updates
• Monitoring support
Production support

8. Breaking the monolith

9. Monolith architecture

10. Mircoservice architecture

11. Demo

12. • Option 1 - manual REST client
• Option 2 - Lagom service client (coming soon!)
• Option 3 - Generated Swagger client (coming soon!)
Consuming Lagom services

13. • Implementing a Lagom descriptor
Consuming Monolith

14. • Getting started: lightbend.com/lagom
• Examples: lightbend.com/activator/templates
• Contribute: https://github.com/lagom
• Communicate:
• https://groups.google.com/forum/#!forum/lagom-framework
• https://gitter.im/lagom/lagom
• Lightbend Proof of Concept Program: lightbend.com/company/contact
Try it out